AP7342D-3318FS6-7 Equivalent & Substitute Parts

Part Overview

The AP7342D-3318FS6-7 is a linear voltage regulator IC from Diodes Incorporated designed for dual-output power management applications. This device provides positive fixed outputs at 1.8V and 3.3V with 150mA per channel, housed in a 6-pin X2-DFN1212-6 package. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this dual-output regulation topology.

Key Parameters

Parameter	Value
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Output Configuration	Positive Fixed, 2 Outputs
Output Voltages	1.8V, 3.3V
Current per Output	150mA
Input Voltage (Max)	5.25V
Operating Temperature	-40°C to 85°C
Package Type	6-XFDFN Exposed Pad (X2-DFN1212-6)
Control Features	Enable
Protection Features	Over Current
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the AP7342D-3318FS6-7 is determined by the following critical parameters:

Dual positive fixed output configuration at 1.8V and 3.3V
Minimum current capability per output channel
Maximum input voltage tolerance (5.25V)
Operating temperature range (-40°C to 85°C)
Surface mount packaging compatibility
Regulatory compliance (RoHS3, REACH Unaffected)

The AP7345D-3318RH4-7 qualifies as a manufacturer-recommended substitute because it maintains the same output voltage levels, input voltage specification, and operating temperature range. While the substitute offers enhanced current capability (300mA per output versus 150mA) and different packaging (8-pin X2-DFN1612-8 versus 6-pin X2-DFN1212-6), these represent functional improvements rather than incompatibilities. The increased current capacity and package size do not prevent direct functional substitution in applications designed for the original part.

Parameter Comparison

Parameter	AP7342D-3318FS6-7	AP7345D-3318RH4-7
Manufacturer	Diodes Incorporated	Diodes Incorporated
Product Status	Last Time Buy	Active
Output Configuration	Positive Fixed, 2 Outputs	Positive Fixed, 2 Outputs
Output Voltages	1.8V, 3.3V	3.3V, 1.8V
Current per Output	150mA, 150mA	300mA, 300mA
Voltage - Input (Max)	5.25V	5.25V
Voltage Dropout (Max)	0.39V @ 150mA, 0.29V @ 150mA	0.29V @ 300mA, 0.39V @ 300mA
Current - Quiescent (Iq)	100 µA	140 µA
PSRR	75dB (1kHz)	75dB (1kHz)
Control Features	Enable	Current Limit, Enable
Protection Features	Over Current	Short Circuit
Operating Temperature	-40°C to 85°C	-40°C to 85°C (TA)
Package / Case	6-XFDFN Exposed Pad	8-XFDFN Exposed Pad
Supplier Device Package	X2-DFN1212-6	X2-DFN1612-8
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The AP7345D-3318RH4-7 is the manufacturer-recommended substitute for the AP7342D-3318FS6-7. Selection between these parts should be based on the following criteria:

Choose AP7342D-3318FS6-7 when:

Existing inventory is available and supply is confirmed
PCB layout is finalized for the 6-pin X2-DFN1212-6 package
Current requirements do not exceed 150mA per output

Choose AP7345D-3318RH4-7 when:

New designs are being initiated
Long-term supply assurance is required (Active product status)
Current requirements up to 300mA per output are needed
PCB redesign for the 8-pin X2-DFN1612-8 package is feasible
Enhanced protection features (Short Circuit) are beneficial

Both parts maintain identical output voltage specifications, input voltage tolerance, and operating temperature range. Both are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the AP7345D-3318RH4-7 directly replace the AP7342D-3318FS6-7 on an existing PCB?

A: Direct PCB replacement is not possible due to package differences. The AP7342D uses a 6-pin X2-DFN1212-6 package while the AP7345D uses an 8-pin X2-DFN1612-8 package. PCB layout modification is required, including footprint changes and potential routing adjustments.

Q: Are the output voltages identical between these parts?

A: Yes. Both parts provide fixed outputs at 1.8V and 3.3V. The voltage specifications are identical.

Q: What is the primary advantage of the AP7345D-3318RH4-7 over the AP7342D-3318FS6-7?

A: The AP7345D provides doubled current capability (300mA per output versus 150mA) and includes additional protection features (Short Circuit protection). The AP7345D also maintains Active product status, ensuring continued availability.

Q: Do both parts operate across the same temperature range?

A: Yes. Both parts operate from -40°C to 85°C, providing identical thermal specifications.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical regulatory certifications.

Q: What is the significance of the AP7342D being in Last Time Buy status?

A: Last Time Buy status indicates that the manufacturer will no longer produce this part after existing inventory is depleted. This necessitates migration to the AP7345D or identification of alternative sources for continued supply.

Q: Can I use the AP7345D in an application originally designed for 150mA per output?

A: Yes. The AP7345D is fully compatible with applications requiring up to 150mA per output. The higher current rating provides additional design margin and does not create incompatibility.

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